U.S. Navy Aviation Electrician's Mate 2nd Class John

U.S. Navy Aviation Electrician's Mate 2nd Class John Caldwell, with Helicopter Sea Combat Squadron (HSC) 9, performs maintenance on an MH-60R Seahawk helicopter aboard the aircraft carrier USS George H.W. Bush (CVN 77) in the Atlantic Ocean Aug. 6, 2013. The George H.W Bush conducted a tailored ship?s training availability and final evaluation problem, which prepared the ship and crew for full integration into a carrier strike group through a range of mission-critical operations. (U.S. Navy photo by Mass Communication Specialist Seaman Brian Stephens/Released)